On Nar Shadda, when Mira goes to the Jekk Jekk Tarr lounge and your alignment..

For levelling up, I suggest getting all the Toughness feats first. What I would do is let your character kill all the Ubese after Mira gets him/her in.

As Mira, kill Hanharr and the Kath hounds like normal. Then set up a mass of mines (max 15) just outside the door. Then pick the guards off one or two at a time, using ranged weapons to get their attention (or melee if your Strength is higher than your Dexterity), and using the mines when needed. Go forward, through the door, killing Ubese as required, and left to give your character access to the compound. As yourself, slaughter those sorry Ubese, gathering remains and treasures as desired, and enter the Pit. Your captor is waiting for you, but you don't get to kill him. In fact, kiss yourself goodbye for a while, because you're not going to be yourself until a bit later. Oh, and have fun with it.

You can do it.

Usually as Mira, I just run as fast as I can to the exit and get out of there w/o fighting. I've played through the game before, so I know where the escape tunnel is. If you want to get out w/o being killed (and want to save her level-ups for later), give Mira an alacrity booster and get to the escape as fast as you can.

I get master rapid shot, and the most powerfull ranged weapon in my inventory and then use master rapid shot, run, shoot, ... Until there dead then move on to the next room